public static void main(String[] arg) {
		        double paperThickness = 0.1; 
		        double everestHeight = 8849;
		        double foldedPapeeight = paperThickness * Math.pow(2, 30);
		        int numberOfFolds = (int) (Math.log(everestHeight / paperThickness) / Math.log(2));
		        System.out.printf("需要折叠 %d 次才能折成珠穆朗玛峰的高度。%n", numberOfFolds);
		    }